Sofa



FIG. 1 is a front right perspective view of the sofa showing the new design;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a front right perspective view thereof in an inclined position;

FIG. 10 is a front left perspective view thereof in the inclined position;

FIG. 11 is a front view thereof in the inclined position;

FIG. 12 is a rear view thereof in the inclined position;

FIG. 13 is a left side view thereof in the inclined position;

FIG. 14 is a right side view thereof in the inclined position;

FIG. 15 is a top plan view thereof in the inclined position;

FIG. 16 is a bottom plan view thereof in the inclined position; and,

FIG. 17 is an enlarged detail view of the foot portion shown in FIG. 16.

The dashed lines shown on the article represent topstitching. 

The ornamental design for a sofa, as shown and described. 